Uniden BCD160DN English Owners Manual - Page 13

Simplex Operation, Repeater Operation, UNDERSTANDING BANKS, Channel Storage Banks, Service Search

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Page 13 highlights

• FRS/GMRS users • Many business radio users When you want to store a conventional system, all you need to know are the frequencies they operate on. When you are scanning a conventional system, the scanner stops very briefly on each channel to see if there is activity. If there isn't, the scanner quickly moves to the next channel. If there is, then the scanner pauses on the transmission until it is over. Simplex Operation Simplex systems use a single frequency for both transmit and receive. Most radios using this type of operation are limited to line-of-sight operation. This type of radio is frequently used at construction job sites, and with inexpensive consumer radios such as GMRS/FRS radios. The range is typically 1-8 miles, depending upon the terrain and many other factors. Repeater Operation Repeater systems use two frequencies: one transmits from the radio to a central repeater; the other transmits from the repeater to other radios in the system. With a repeater-based system, the repeater is located on top of a tall building or on a radio tower that provides great visibility to the area of operation. When a user transmits (on an input frequency), the signal is picked up by the repeater and retransmitted (on an output frequency). The user's radio always listens for activity on the output frequency and transmit on the input frequency. Since the repeater is located very high, there is a very large line of sight. Typical repeater systems provide coverage out to about a 25-mile radius from the repeater location. UNDERSTANDING BANKS Channel Storage Banks To make it easier to identify and select the channels you want to listen to, the 1,000 channels are divided into 10 channel storage banks containing 100 channels each. You could use each channel storage bank to group frequencies by department, location, area of interest, or any other way you prefer. You can listen to any or all of the banks by pressing the number keys to turn a channel bank on and off. Service Search Banks This scanner is preprogrammed with many of the frequencies allocated to Airband, CB radio, FRS/GMRS/MURS, Ham radio, Marine, Media, Military Air, Public Safety, Racing, and Railroad. There are 10 banks allocated for these searches that can be used just like the channel storage banks to search these frequencies in Service Search mode. 13

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13
•
FRS/GMRS users
•
Many business radio users
When you want to store a conventional system, all you need to know are the
frequencies they operate on. When you are scanning a conventional system, the
scanner stops very brie
fl
y on each channel to see if there is activity. If there isn’t, the
scanner quickly moves to the next channel. If there is, then the scanner pauses on
the transmission until it is over.
Simplex Operation
Simplex systems use a single frequency for both transmit and receive. Most radios
using this type of operation are limited to line-of-sight operation. This type of radio is
frequently used at construction job sites, and with inexpensive consumer radios such
as GMRS/FRS radios. The range is typically 1-8 miles, depending upon the terrain
and many other factors.
Repeater Operation
Repeater systems use two frequencies: one transmits from the radio to a central
repeater; the other transmits from the repeater to other radios in the system. With a
repeater-based system, the repeater is located on top of a tall building or on a radio
tower that provides great visibility to the area of operation.
When a user transmits (on an input frequency), the signal is picked up by the
repeater and retransmitted (on an output frequency). The user’s radio always listens
for activity on the output frequency and transmit on the input frequency. Since the
repeater is located very high, there is a very large line of sight. Typical repeater
systems provide coverage out to about a 25-mile radius from the repeater location.
UNDERSTANDING BANKS
Channel Storage Banks
To make it easier to identify and select the channels you want to listen to, the 1,000
channels are divided into 10 channel storage banks containing 100 channels each.
You could use each channel storage bank to group frequencies by department,
location, area of interest, or any other way you prefer. You can listen to any or all of
the banks by pressing the number keys to turn a channel bank on and off.
Service Search Banks
This scanner is preprogrammed with many of the frequencies allocated to Airband,
CB radio, FRS/GMRS/MURS, Ham radio, Marine, Media, Military Air, Public Safety,
Racing, and Railroad. There are 10 banks allocated for these searches that can
be used just like the channel storage banks to search these frequencies in Service
Search mode.